z/OS Communications Server: SNA Programmer's LU 6.2 Guide
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States of recovery

z/OS Communications Server: SNA Programmer's LU 6.2 Guide
SC27-3669-00

After a failure, a VTAM® application program that has enabled persistent LU-LU session support is in one of three recovery states:
Recovery Pending
The application program fails, and the recovering application program has not opened its ACB.
Recovery-in-Progress
The recovering application program has opened its ACB, and sessions are pending recovery. The application program remains in this state until the last session is either restored or terminated.
Recovery Complete
The application program has restored all modes.
Note: VTAM retains a mode even if it has no associated sessions at the time of the failure. The mode must be restored before it can be used.
Parent topic: Restoring modes and any associated persistent LU-LU sessions

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